MESON Chess Problem Database

Problem Display
PID: 43649 (2N3r1/2B1p1nR/R1b2kN1/3n3P/4Q1pP/2qr3p/BPPb4/7K w - - 0 1)

Fleck, Ferenc

Schach-Express, 1949

2N3r1/2B1p1nR/R1b2kN1/3n3P/4Q1pP/2qr3p/BPPb4/7K

#2

12 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Kf7
      • 2.Qxe7#
  • Tries
    • 1.Sf4?
      • threat
        • 2.Qg6#
      • 1...Kf7
        • 2.Qxe7#
      • 1...Sxc7
        • 2.Rh6#
      • 1...Sxh5
        • 2.Sxh5#
        • 2.Qe6#
      • 1...Se3
        • 2.Rh6#
      • 1...Sb4
        • 2.Rh6#
      • 1...Sb6
        • 2.Rh6#
      • 1...Sf5
        • 2.Qe6#
      • 1...Se6
        • 2.Qxe6#
      • 1...Se8
        • 2.Qe6#
      • 1...Sxf4!
    • 1.Qe5+?
      • 1...Kf7
        • 2.Qxe7#
      • 1...Qxe5!
    • 1.Qxe7+?
      • 1...Kf5
        • 2.Sd6#
      • 1...Sxe7+!
  • Keys
    • 1.Se5!
      • threat
        • 2.Qg6#
      • 1...Ke6
        • 2.Qg6#
      • 1...Sxc7
        • 2.Sxg4#
      • 1...Sxh5
        • 2.Sd7#
      • 1...Se3
        • 2.Rh6#
      • 1...Sb4
        • 2.Sxg4#
      • 1...Sf4
        • 2.Sxg4#
      • 1...Sb6
        • 2.Sxg4#
      • 1...Sf5
        • 2.Sd7#
      • 1...Se6
        • 2.Rf7#
      • 1...Se8
        • 2.Sd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 1
  • Sets
    • K(h);N_SPINB(g),P-FLIGHT,P_SPINS(f)::QAR1(E),XP(i)
  • Tries
    • Try
      • S(I);
      • Threat
        • QAR1(E)
      • Vars
        • K(h);N_SPINB(g),P-FLIGHT,P_SPINS(f)::QAR1(E),XP(i)
        • S(f);P_PINQ(E),XB(J)::R(K)
        • S(f);P_PINQ(E)::R(K)
        • S(f);N_SPINB(g),P_PINQ(E)::R(K)
        • S(j);N_GUARD::QAR1(E)
        • S(j);N_GUARD,N_SPINB(g)::QAR1(E),XS(j)
      • Refutation
        • S(f);P_PINQ(E),XS(I)
    • Try
      • Q(E);CHECK
      • Vars
        • K(h);N_SPINB(g),P-FLIGHT,P_SPINS(f)::QAR1(E),XP(i)
      • Refutation
        • Q(b);XQ(E)
    • Try
      • Q(E);CHECK,XP(i)
      • Vars
        • K(h);N_SPINB(g),P-FLIGHT::S(L)
      • Refutation
        • S(f);CHECK,XQ(E)
  • Actual
    • S(I);
    • Threat
      • QAR1(E)
    • Vars
      • K(h);P-FLIGHT,P_SPINS(f)::QAR2(E)
      • S(f);P_PINQ(E),XB(J)::S(I),XP(e)
      • S(j);XP(G)::S(I)
      • S(f);P_PINQ(E),S_CUTB(a)::R(K)
      • S(f);P_PINQ(E)::S(I),XP(e)
      • S(f);N_SPINB(g),P_PINQ(E)::S(I),XP(e)
      • S(j);::S(I)
      • S(j);N_SPINB(g),OGATE,SBLOCK::R1(K)
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Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).